mirror of
https://github.com/mozilla/pdf.js.git
synced 2025-04-19 06:38:07 +02:00
2f828c7bf4
This patch is adding some code in order to extract a drawing as curves from an image. The algorithm is basically the following: - reduce the dimensions - make it gray - apply a bilateral filter in order to add some blurryness while keeping the edges - compute the histogram - guess what's the background color which should contain a large majority of the pixels - make a binary image - extract the contours in using the Suzuki algorithm - apply the Douglas-Peucker algorithm in order to reduce the number of points The algorithm is improvable but it should work pretty well if there's a clear difference between the background and the drawing. In a v2 we could use a ML model in order to improve the extraction. There's few changes related to the UI in order to make the tool usable, but they're very basic for the moment.
229 lines
7.8 KiB
JSON
229 lines
7.8 KiB
JSON
{
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"type": "object",
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"properties": {
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"viewerCssTheme": {
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"title": "Theme",
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"description": "The theme to use.\n0 = Use system theme.\n1 = Light theme.\n2 = Dark theme.",
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"type": "integer",
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"enum": [0, 1, 2],
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"default": 2
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},
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"showPreviousViewOnLoad": {
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"description": "DEPRECATED. Set viewOnLoad to 1 to disable showing the last page/position on load.",
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"type": "boolean",
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"default": true
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},
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"viewOnLoad": {
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"title": "View position on load",
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"description": "The position in the document upon load.\n -1 = Default (uses OpenAction if available, otherwise equal to `viewOnLoad = 0`).\n 0 = The last viewed page/position.\n 1 = The initial page/position.",
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"type": "integer",
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"enum": [-1, 0, 1],
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"default": 0
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},
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"defaultZoomDelay": {
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"title": "Default zoom delay",
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"description": "Delay (in ms) to wait before redrawing the canvas.",
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"type": "integer",
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"default": 400
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},
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"defaultZoomValue": {
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"title": "Default zoom level",
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"description": "Default zoom level of the viewer. Accepted values: 'auto', 'page-actual', 'page-width', 'page-height', 'page-fit', or a zoom level in percents.",
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"type": "string",
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"pattern": "|auto|page-actual|page-width|page-height|page-fit|[0-9]+\\.?[0-9]*(,[0-9]+\\.?[0-9]*){0,2}",
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"default": ""
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},
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"sidebarViewOnLoad": {
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"title": "Sidebar state on load",
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"description": "Controls the state of the sidebar upon load.\n -1 = Default (uses PageMode if available, otherwise the last position if available/enabled).\n 0 = Do not show sidebar.\n 1 = Show thumbnails in sidebar.\n 2 = Show document outline in sidebar.\n 3 = Show attachments in sidebar.",
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"type": "integer",
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"enum": [-1, 0, 1, 2, 3],
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"default": -1
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},
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"enableHandToolOnLoad": {
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"description": "DEPRECATED. Set cursorToolOnLoad to 1 to enable the hand tool by default.",
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"type": "boolean",
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"default": false
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},
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"enableHWA": {
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"title": "Enable hardware acceleration",
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"description": "Whether to enable hardware acceleration.",
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"type": "boolean",
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"default": true
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},
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"enableAltText": {
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"type": "boolean",
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"default": false
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},
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"enableGuessAltText": {
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"type": "boolean",
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"default": true
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},
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"enableAltTextModelDownload": {
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"type": "boolean",
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"default": true
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},
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"enableNewAltTextWhenAddingImage": {
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"type": "boolean",
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"default": true
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},
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"altTextLearnMoreUrl": {
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"type": "string",
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"default": ""
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},
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"enableSignatureEditor": {
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"type": "boolean",
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"default": false
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},
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"enableUpdatedAddImage": {
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"type": "boolean",
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"default": false
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},
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"cursorToolOnLoad": {
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"title": "Cursor tool on load",
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"description": "The cursor tool that is enabled upon load.\n 0 = Text selection tool.\n 1 = Hand tool.",
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"type": "integer",
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"enum": [0, 1],
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"default": 0
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},
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"pdfBugEnabled": {
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"title": "Enable debugging tools",
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"description": "Whether to enable debugging tools.",
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"type": "boolean",
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"default": false
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},
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"enableScripting": {
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"title": "Enable active content (JavaScript) in PDFs",
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"type": "boolean",
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"description": "Whether to allow execution of active content (JavaScript) by PDF files.",
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"default": false
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},
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"enableHighlightFloatingButton": {
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"type": "boolean",
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"default": false
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},
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"highlightEditorColors": {
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"type": "string",
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"default": "yellow=#FFFF98,green=#53FFBC,blue=#80EBFF,pink=#FFCBE6,red=#FF4F5F"
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},
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"disableRange": {
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"title": "Disable range requests",
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"description": "Whether to disable range requests (not recommended).",
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"type": "boolean",
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"default": false
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},
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"disableStream": {
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"title": "Disable streaming for requests",
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"description": "Whether to disable streaming for requests (not recommended).",
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"type": "boolean",
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"default": false
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},
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"disableAutoFetch": {
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"type": "boolean",
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"default": false
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},
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"disableFontFace": {
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"title": "Disable @font-face",
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"description": "Whether to disable @font-face and fall back to canvas rendering (this is more resource-intensive).",
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"type": "boolean",
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"default": false
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},
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"disableTextLayer": {
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"description": "DEPRECATED. Set textLayerMode to 0 to disable the text selection layer by default.",
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"type": "boolean",
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"default": false
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},
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"textLayerMode": {
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"title": "Text layer mode",
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"description": "Controls if the text layer is enabled, and the selection mode that is used.\n 0 = Disabled.\n 1 = Enabled.",
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"type": "integer",
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"enum": [0, 1],
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"default": 1
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},
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"externalLinkTarget": {
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"title": "External links target window",
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"description": "Controls how external links will be opened.\n 0 = default.\n 1 = replaces current window.\n 2 = new window/tab.\n 3 = parent.\n 4 = in top window.",
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"type": "integer",
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"enum": [0, 1, 2, 3, 4],
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"default": 0
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},
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"disablePageLabels": {
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"type": "boolean",
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"default": false
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},
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"disablePageMode": {
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"description": "DEPRECATED.",
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"type": "boolean",
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"default": false
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},
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"disableTelemetry": {
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"title": "Disable telemetry",
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"type": "boolean",
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"description": "Whether to prevent the extension from reporting the extension and browser version to the extension developers.",
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"default": false
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},
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"annotationMode": {
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"type": "integer",
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"enum": [0, 1, 2, 3],
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"default": 2
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},
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"annotationEditorMode": {
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"type": "integer",
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"enum": [-1, 0, 3, 15],
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"default": 0
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},
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"enablePermissions": {
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"type": "boolean",
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"default": false
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},
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"enableXfa": {
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"type": "boolean",
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"default": true
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},
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"historyUpdateUrl": {
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"type": "boolean",
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"default": false
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},
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"ignoreDestinationZoom": {
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"title": "Ignore the zoom argument in destinations",
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"description": "When enabled it will maintain the currently active zoom level, rather than letting the PDF document modify it, when navigating to internal destinations.",
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"type": "boolean",
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"default": false
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},
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"enablePrintAutoRotate": {
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"title": "Automatically rotate printed pages",
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"description": "When enabled, landscape pages are rotated when printed.",
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"type": "boolean",
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"default": true
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},
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"scrollModeOnLoad": {
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"title": "Scroll mode on load",
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"description": "Controls how the viewer scrolls upon load.\n -1 = Default (uses the last position if available/enabled).\n 3 = Page scrolling.\n 0 = Vertical scrolling.\n 1 = Horizontal scrolling.\n 2 = Wrapped scrolling.",
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"type": "integer",
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"enum": [-1, 0, 1, 2, 3],
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"default": -1
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},
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"spreadModeOnLoad": {
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"title": "Spread mode on load",
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"description": "Whether the viewer should join pages into spreads upon load.\n -1 = Default (uses the last position if available/enabled).\n 0 = No spreads.\n 1 = Odd spreads.\n 2 = Even spreads.",
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"type": "integer",
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"enum": [-1, 0, 1, 2],
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"default": -1
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},
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"forcePageColors": {
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"description": "When enabled, the pdf rendering will use the high contrast mode colors",
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"type": "boolean",
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"default": false
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},
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"pageColorsBackground": {
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"description": "The color is a string as defined in CSS. Its goal is to help improve readability in high contrast mode",
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"type": "string",
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"default": "Canvas"
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},
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"pageColorsForeground": {
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"description": "The color is a string as defined in CSS. Its goal is to help improve readability in high contrast mode",
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"type": "string",
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"default": "CanvasText"
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}
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}
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}
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